22665216

Appears in sequences

• Number of n-colorings of the 7 X 7 X 7 triangular grid.at n=4A182792
• Square array A(n,k), n>=1, k>=1, read by antidiagonals: A(n,k) is the number of n-colorings of the k X k X k triangular grid.at n=48A182797
• Number of 4-colorings of the n X n X n triangular grid.at n=6A182798
• A number k belongs to the sequence if k = 1 or k is divisible by its prime shadow A181819(k) and the quotient k/A181819(k) also belongs to the sequence.at n=8A325756